Fastener



F. S. CARR,

FASTENER.

APPLICATION FILED Nov.2z, 1917.

1,337, 1 15, Patented Apr. 13, 1920.

Invertia? Fine-0l 5f, Cra/i12.

UNITED sTATEs PATENT oEEioE.:

FRED S. CARCR.,` 0F NEWTON, MASSACHUSETTS, ASSIG-NOR tT0 CARR FASTENER COMPANY, OF CAMBRIDGE, MASSACHUSETTS, A VCOREOJftATION OF MAINE.

FASTENER.

Application filed November 27, 1917.

To all mlm/n it may concern.' n' Be it known that I FRED S. CARR a citii zen of the United States, and a resident of ingsrepresenting like parts.

rIhis invention relates to improvements in separable fasteners, and more particularly, though not exclusively, to stud and socket fasteners wherein a stud having an eXpansible head is adapted to cooperate with 'a socket having an aperture of fixed dimensions, saidA stud being separable from said socket by relative tipping movement in one direction only.

Referring to the drawings:

Figure l is a front elevation of a pre-l ferred form of fastener constituting one embodiment of my invention;

Fig. 2 is a section thereof, partly in elevation, on the line 2 2 of Fig. l; and

Fig. 3 is a section, partly in elevation., on the lineB-S of Fig. 2.

I have elected to show my invention in `connection with'the securing of a curtain to the body of an automobile, and in the'drawings I have shown the socket as a round hole -in the sheet metal side 4 of the body of the car, and I have shown the stud attached to an automobile curtain 5. In the preferred form of my invention selected for illustrative purposes, I have shown the stud having a head portion 6, preferably pressed'from sheet metal and split longitudinally thereof to receive the resilient wire 7, which is preferably, as shown, provided with. two coils adapted to project on opposite sides of the head 6 and to engage the sides 8 of the aperture forming the socket. The preferred form of double coil shown in the drawings is peculiarly desirable because the strain on the wire is well distributed, and because one of the coilsy provides a squared shoulder 9 for engagement with the edge of the socket opening, while the other coil provides a' roinded portion for engagement with the opposite edge of said. socket opening, thus affording a very simple and inexpensive formof one-way fastener. )In the embodi- Specification of Letters Patent.

serial No. 204.251.

ment of my invention shown in the drawings, the head 6 is provided with an annular flange l0 adapted to engage a flange ll having a tubularprojectiorn 12 adapted to pass through the curtain`5 and to be riveted over a plate 13 on the opposite side of the curtain. The ends of the resilient wire forming the expansible portions of the head are preferably held between the flanges 10 and l1, while being positioned laterally by the sides of the slot in the head 6 through which the socket-engaging portions of said wire project. To facilitate ready separation of the stud from the socket by tipping movement, I have shown the flanges l0 and l1 projecting downwardly away from the squared jaw 9 a considerable distance farther than the opposite sides of said flanges project in a direction toward said jaw 9. rIhis permits the flange 10 to closely abut against the face of the socket, while permit,` ting the stud to rock about the squared jaw 9 when separation of the stud from the socket is to be effected. When the stud is to be entered in the socket, the loops in the resilient portion of lthe stud yield whenl pressed a ainst the sides of the aperture forming'te socket, thus permitting the stud `to enter the socket, after which they immediately spring outwardly to engage the sides of theiaperture interiorly of the socket and to stron ly resist separation of stud and socket. eparation of stud and socket may, however, be readily effected by an outward pull on the bottom of the curtain 5, which rocks the stud about the squared jaw 9, the rounded spring aw yielding until such position is reached that the stud has no further tendency to remain in the'socket. If, however, force be exerted on the upperportion of the curtain 5, as by the'lwind, or by an occupant of the car leaning against the curtain, such pressure will not open the socket because the squared jaw 9 will be firmly and squarely engaged by the coperating interior edge lor wall of the socket aperture. Similarly, lateral relative tipping movement of stud and socket will be ineffective to disengage the squared jaw 9 from the coperating portion of the socket.

IVhile I have shown and described one ernbodiment of my invention, it will be understood that changes involving omission, alteration, substitution and reversal of parts, and even changes in the mode of operation,

. portion of said socket.

may be made Without departing from the scope of my invention, which is best defined in the followingclaims.

Claims:

l. A stud and socket fastener comprising, in combination, a socket, and a stud hav- 'ing a head comprising a shell and opposed expansible resilient elements projecting through said shell, one of said elements presenting an abrupt shoulder to a coperating portion of said socket, and the other of said elements presenting a 'rounded por-` the other of said coils presenting a rounded shoulder for engagement with a coperating 3. A stud and socket fastener comprising, in combination, a socket, and a stud having a head portion of fixed proportions having a slot therein and a coiled Wire projecting through said slot for engagement with the socket, one side of 'said Wire presenting an` abrupt shoulder for engagement with the socket and the other side thereof presenting a rounded shoulder for engagement with the socket. y

4:. A stud and socket fastener comprising, in combination, a socket, and a stud having a head portion presenting opposite resilient elements, both of said elements yielding when the stud is entered in the socket, While only one of said elements is free to yield When said stud `is Withdrawn from said socket. W A

A stud and socket'fastener comprising, in combination, a socket providing an aperture, and a stud lhaving an expansible head comprising a casing and a resilient element carried thereby for engagement in said aperture, said head being separable from said socket by tipping movement in one direction only and being inseparable therefrom by outward strain in ,a direction axial of the stud.

6. A stud andsocket fastener comprising, in combination, a socket providing an aperture, and a stud having an expansible head for engagement in vsaid aperture, said head being/separable from Lsaid socket by tipping'y movement in one direction only, being inseparable therefrom by outWa-rd strain 1n a direction axial lof the stud, and said stud being engageable `with said Socket by rectilinear movement into said socket.

7. A stud and socket fastener comprising, in combination, a socket, a stud comprising a hollow head, resilient elements terminally supported. in said head .and carrying inyWardly yieldable engaging portions projecting through said head, one such portion having an inner abrupt shoulder and the other a shoulder tapered inwardly.

In testimony whereof, I have signed my name to this speclicatlon.

FRED S. CARR. 

